Merge airlied/drm-next into drm-misc-nextdrm-misc-next-2018-03-21

Refresh -misc-next

Signed-off-by: Sean Paul <seanpaul@chromium.org>

1 files changed, 36 insertions, 33 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem_context.c b/drivers/gpu/drm/i915/i915_gem_context.c
index 648e7536ff51..f2cbea7cf940 100644
--- a/drivers/gpu/drm/i915/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/i915_gem_context.c
@@ -211,17 +211,23 @@ static void context_close(struct i915_gem_context *ctx)
 static int assign_hw_id(struct drm_i915_private *dev_priv, unsigned *out)
 {
 	int ret;
+	unsigned int max;
+
+	if (INTEL_GEN(dev_priv) >= 11)
+		max = GEN11_MAX_CONTEXT_HW_ID;
+	else
+		max = MAX_CONTEXT_HW_ID;
 
 	ret = ida_simple_get(&dev_priv->contexts.hw_ida,
-			     0, MAX_CONTEXT_HW_ID, GFP_KERNEL);
+			     0, max, GFP_KERNEL);
 	if (ret < 0) {
 		/* Contexts are only released when no longer active.
 		 * Flush any pending retires to hopefully release some
 		 * stale contexts and try again.
 		 */
-		i915_gem_retire_requests(dev_priv);
+		i915_retire_requests(dev_priv);
 		ret = ida_simple_get(&dev_priv->contexts.hw_ida,
-				     0, MAX_CONTEXT_HW_ID, GFP_KERNEL);
+				     0, max, GFP_KERNEL);
 		if (ret < 0)
 			return ret;
 	}
@@ -338,11 +344,6 @@ static void __destroy_hw_context(struct i915_gem_context *ctx,
 	context_close(ctx);
 }
 
-/**
- * The default context needs to exist per ring that uses contexts. It stores the
- * context state of the GPU for applications that don't utilize HW contexts, as
- * well as an idle case.
- */
 static struct i915_gem_context *
 i915_gem_create_context(struct drm_i915_private *dev_priv,
 			struct drm_i915_file_private *file_priv)
@@ -449,12 +450,18 @@ destroy_kernel_context(struct i915_gem_context **ctxp)
 	i915_gem_context_free(ctx);
 }
 
+static bool needs_preempt_context(struct drm_i915_private *i915)
+{
+	return HAS_LOGICAL_RING_PREEMPTION(i915);
+}
+
 int i915_gem_contexts_init(struct drm_i915_private *dev_priv)
 {
 	struct i915_gem_context *ctx;
-	int err;
 
+	/* Reassure ourselves we are only called once */
 	GEM_BUG_ON(dev_priv->kernel_context);
+	GEM_BUG_ON(dev_priv->preempt_context);
 
 	INIT_LIST_HEAD(&dev_priv->contexts.list);
 	INIT_WORK(&dev_priv->contexts.free_work, contexts_free_worker);
@@ -462,14 +469,14 @@ int i915_gem_contexts_init(struct drm_i915_private *dev_priv)
 
 	/* Using the simple ida interface, the max is limited by sizeof(int) */
 	BUILD_BUG_ON(MAX_CONTEXT_HW_ID > INT_MAX);
+	BUILD_BUG_ON(GEN11_MAX_CONTEXT_HW_ID > INT_MAX);
 	ida_init(&dev_priv->contexts.hw_ida);
 
 	/* lowest priority; idle task */
 	ctx = i915_gem_context_create_kernel(dev_priv, I915_PRIORITY_MIN);
 	if (IS_ERR(ctx)) {
 		DRM_ERROR("Failed to create default global context\n");
-		err = PTR_ERR(ctx);
-		goto err;
+		return PTR_ERR(ctx);
 	}
 	/*
 	 * For easy recognisablity, we want the kernel context to be 0 and then
@@ -479,23 +486,18 @@ int i915_gem_contexts_init(struct drm_i915_private *dev_priv)
 	dev_priv->kernel_context = ctx;
 
 	/* highest priority; preempting task */
-	ctx = i915_gem_context_create_kernel(dev_priv, INT_MAX);
-	if (IS_ERR(ctx)) {
-		DRM_ERROR("Failed to create default preempt context\n");
-		err = PTR_ERR(ctx);
-		goto err_kernel_context;
+	if (needs_preempt_context(dev_priv)) {
+		ctx = i915_gem_context_create_kernel(dev_priv, INT_MAX);
+		if (!IS_ERR(ctx))
+			dev_priv->preempt_context = ctx;
+		else
+			DRM_ERROR("Failed to create preempt context; disabling preemption\n");
 	}
-	dev_priv->preempt_context = ctx;
 
 	DRM_DEBUG_DRIVER("%s context support initialized\n",
 			 dev_priv->engine[RCS]->context_size ? "logical" :
 			 "fake");
 	return 0;
-
-err_kernel_context:
-	destroy_kernel_context(&dev_priv->kernel_context);
-err:
-	return err;
 }
 
 void i915_gem_contexts_lost(struct drm_i915_private *dev_priv)
@@ -521,7 +523,8 @@ void i915_gem_contexts_fini(struct drm_i915_private *i915)
 {
 	lockdep_assert_held(&i915->drm.struct_mutex);
 
-	destroy_kernel_context(&i915->preempt_context);
+	if (i915->preempt_context)
+		destroy_kernel_context(&i915->preempt_context);
 	destroy_kernel_context(&i915->kernel_context);
 
 	/* Must free all deferred contexts (via flush_workqueue) first */
@@ -594,28 +597,28 @@ int i915_gem_switch_to_kernel_context(struct drm_i915_private *dev_priv)
 
 	lockdep_assert_held(&dev_priv->drm.struct_mutex);
 
-	i915_gem_retire_requests(dev_priv);
+	i915_retire_requests(dev_priv);
 
 	for_each_engine(engine, dev_priv, id) {
-		struct drm_i915_gem_request *req;
+		struct i915_request *rq;
 
 		if (engine_has_idle_kernel_context(engine))
 			continue;
 
-		req = i915_gem_request_alloc(engine, dev_priv->kernel_context);
-		if (IS_ERR(req))
-			return PTR_ERR(req);
+		rq = i915_request_alloc(engine, dev_priv->kernel_context);
+		if (IS_ERR(rq))
+			return PTR_ERR(rq);
 
 		/* Queue this switch after all other activity */
 		list_for_each_entry(timeline, &dev_priv->gt.timelines, link) {
-			struct drm_i915_gem_request *prev;
+			struct i915_request *prev;
 			struct intel_timeline *tl;
 
 			tl = &timeline->engine[engine->id];
 			prev = i915_gem_active_raw(&tl->last_request,
 						   &dev_priv->drm.struct_mutex);
 			if (prev)
-				i915_sw_fence_await_sw_fence_gfp(&req->submit,
+				i915_sw_fence_await_sw_fence_gfp(&rq->submit,
 								 &prev->submit,
 								 I915_FENCE_GFP);
 		}
@@ -627,7 +630,7 @@ int i915_gem_switch_to_kernel_context(struct drm_i915_private *dev_priv)
 		 * but an extra layer of paranoia before we declare the system
 		 * idle (on suspend etc) is advisable!
 		 */
-		__i915_add_request(req, true);
+		__i915_request_add(rq, true);
 	}
 
 	return 0;
@@ -803,11 +806,11 @@ int i915_gem_context_setparam_ioctl(struct drm_device *dev, void *data,
 
 	case I915_CONTEXT_PARAM_PRIORITY:
 		{
-			int priority = args->value;
+			s64 priority = args->value;
 
 			if (args->size)
 				ret = -EINVAL;
-			else if (!to_i915(dev)->engine[RCS]->schedule)
+			else if (!(to_i915(dev)->caps.scheduler & I915_SCHEDULER_CAP_PRIORITY))
 				ret = -ENODEV;
 			else if (priority > I915_CONTEXT_MAX_USER_PRIORITY ||
 				 priority < I915_CONTEXT_MIN_USER_PRIORITY)